This research aimed to study the correlation among the personal factors which affect on the academic probation of Thaksin University’s undergraduate students. Samples used to study were 599 undergraduate students of Thaksin University who enrolled in the first semester of academic year 2015 which obtained by circular stratified systematic sampling method. The tool used to collect the data was a questionnaire about personal factors and undergraduate student’s status. The statistics used in data analysis were frequency, percentage, and Chi-square test. Research findings indicated that, sex, year of study, faculty, admission procedures, the diseases/problems of sexual/drug, marital status of parents, educational level of father, and average monthly income of family correlated with the undergraduate student’s status at the significance level .01. The major in high school, educational level of mother, and occupation of mother correlated with the undergraduate student’s status at the significance level .05

Nidaeha, T., & Kuning M. (2000). An investigation of the determinants of 2nd and 3rd probation in learning for undergraduate students at faculty of Science and Technology, Prince of Songkla University Pattani Campus. Retrieved from http://kb.psu.ac.th/psukb/handle/2010/8422

Waisopa, B., & Raksabun, O. (2010). A study of factors affecting the probation and retire of undergraduate students at faculty of Technical Education (courses five years), Rajamangala University of Technology Isan, Khonkaen Campus. Retrieved from http://ird.rmuti.ac.th/newweb/researcher/downfile.php?t=th&d=506